Roman rule in northern Gaul effectively collapsed in the 5th century. In 451 the region was invaded by Attila the Hun, prompting fears that Paris would be attacked. According to legend, the city was saved by the piety of Sainte Geneviève and her followers, whose prayers for relief were answered when Attila's march turned away from Paris to the south. Ste Geneviève remains Paris' patron saint to this day.
Napoleon's rule came to an abrupt end when he declared war on Prussia in 1870, only to be defeated and captured at Sedan. He abdicated on 4 September, with a Third Republic proclaimed that same day in Paris. On 19 September the Prussian army arrived at Paris and besieged the city. Major city landmarks were pressed into military service, with the Louvre being turned into an arms factory, the Gare d'Orleans (now the Gare d'Austerlitz) into a balloon workshop and the Gare de Lyon into a cannon foundry.
The city emerged into an energetic but restless interwar period, enlivened by the arrival of glamorous émigrés such as Josephine Baker. It was a troubled political period, however, especially when the Great Depression hit Paris.
The combination of social unrest and a somewhat authoritarian, though democratic, government under de Gaulle proved explosive and in early May 1968 an uprising duly broke out, led by Parisian students and factory workers. The evenements (events) fizzled out amidst violence between police and demonstrators, but had a significant long-term effect, eventually forcing the retirement of de Gaulle and the overdue social liberalisation of the country. Many of the leaders of the May 1968 demonstrations went on to play significant roles in local and national politics.
Paris is the capital city of France, as well as the capital of the Île-de-France région, whose territory encompasses Paris and its suburbs. The city of Paris proper is also a département, called Paris département (French: département de Paris).
At the same time, Paris acquired a less savoury reputation as the "sin capital of Europe", with hundreds of brothels, revues and risqué cabarets such as the famous Moulin Rouge. The city also acquired its metro system, opened in 1900.
Extreme right- and left-wing parties flourished, and on 5 February 1934 a mob of Fascist and other far-rightists attempted to storm the National Assembly in a botched coup attempt. In the ensuing violence, fifteen people were killed and another 1,500 wounded. In response, the Socialists and Communists united to form a Popular Front, which took power in 1936 but fell only a year later.
Locally, inhabitants of the Paris suburbs are known as banlieusards. Inhabitants of the whole Paris metropolitan area are known as Franciliens, i.e. from Île-de-France.
Some Parisians welcomed the occupation forces and accepted their presence and their business. Most simply kept their heads down, enduring the rationing and in some cases exploiting the profitable opportunities that it brought. Some actively resisted, but faced the constant threat of torture and death at the hands of the Gestapo and the pro-Vichy Milice (militia).
A general uprising in Paris followed with three days of fighting between loyalists and rebels, including whole regiments of the Paris garrison. The king was forced to abdicate, being replaced by the more acceptable Louis-Philippe.
Paris' party continued virtually until the eve of the outbreak of the First World War on 2 August 1914. Like other French cities, Paris initially welcomed the war as an opportunity to gain revenge for the defeat of 1870. Within a month, however, the city was full of refugees and the Germans were just 15 miles from the city. The government was evacuated to Bordeaux in the expectation that Paris would again fall to German forces.